DESCRIPTION If the red and green indicators fail to illuminate after the power switch is turned on (IG), the vehicle does not recognize the DCM (Telematics Transceiver). The DCM (Telematics Transceiver) connectors may have been disconnected or the DCM (Telematics Transceiver) is malfunctioning. PROCEDURE
(a) Turn the power switch off. (b) Connect the Techstream to the DLC3. (c) Turn the power switch on (IG) and wait for 10 seconds. (d) Turn the Techstream on. (e) Perform "Health Check" using the Techstream and check that Telematics (Safety Connect) is listed on "Health Check Result". Click here
(a) Turn the power switch off. (b) Connect the Techstream to the DLC3. (c) Turn the power switch on (IG) and wait for 10 seconds. (d) Turn the Techstream on. (e) Check current DTCs and history DTCs. Click here
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Lin Communication System(for Gasoline Model): Communication Malfunction between ECUs Connected by LIN (B2785)
DESCRIPTION If the certification ECU (smart key ECU assembly) detects a communication error with an ECU connected to the certification bus lines for 7 seconds or more, DTC B2785 will be stored. DTC No. Detection Item DTC Detection Condition Trouble Area B2785 Communication Malfunction between ECUs C ...